CN108667759B

CN108667759B - Signal transmission method and device

Info

Publication number: CN108667759B
Application number: CN201710214356.9A
Authority: CN
Inventors: 刘凤威; 陈磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2021-03-23
Anticipated expiration: 2037-04-01
Also published as: CN108667759A

Abstract

The embodiment of the invention discloses a signal transmission method, which comprises the following steps: the method comprises the steps that first user equipment determines a first cyclic shift factor corresponding to the first user equipment; the first user equipment performs cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, wherein the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain; the first user equipment performs discrete Fourier transform processing on the first cyclic shift time domain signal to obtain a first frequency domain signal; and the first user equipment performs frequency domain processing on the first frequency domain signal to obtain a first signal to be sent and sends the first signal to be sent. By adopting the embodiment of the invention, the aim of randomizing the interference between the cells can be achieved.

Description

Signal transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a signal transmission method and a device thereof.

Background

In a Long Term Evolution (LTE) system, important Control information such as a Hybrid Automatic Repeat reQuest (HARQ) acknowledgement, a Channel Quality Indicator (CQI), and a scheduling reQuest is generally transmitted through a Physical Uplink Control Channel (PUCCH). In addition to a long-duration PUCCH similar to LTE, the third Generation Partnership Project (3 GPP) proposes to use a short-duration PUCCH in the NR system, so as to greatly reduce Uplink feedback delay. The short-time PUCCH is generally composed of 1 to 2 Orthogonal Frequency Division Multiplexing (OFDM) symbols or Discrete Fourier transform spread OFDM (DFT-s-OFDM) symbols, and can carry information of 1 to several tens of bits.

In the 3GPP related conference, with respect to a single-symbol short-time PUCCH, a consensus is reached on design criteria for the short-time PUCCH under a given load, including: 1) the multiplexing capacity of the short-time PUCCH can be lower than that of the long-time PUCCH; 2) considering at least performance indexes such as frequency diversity, interference diversity, Peak to Average Power Ratio (PAPR) performance, reference signal overhead and the like; 3) interference randomization operations may be supported; 4) for the UCI load larger than 2 bits, an extensible design is supported as much as possible.

The currently proposed short-time PUCCH design scheme has inter-cell interference.

Disclosure of Invention

Embodiments of the present invention provide a signal transmission method and a device thereof, which can achieve the purpose of randomizing inter-cell interference.

In a first aspect, an embodiment of the present invention provides a signal transmission method, including:

the method comprises the steps that first user equipment determines a first cyclic shift factor corresponding to the first user equipment;

the first user equipment performs cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, wherein the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain;

the first user equipment performs discrete Fourier transform processing on the first cyclic shift time domain signal to obtain a first frequency domain signal;

and the first user equipment performs frequency domain processing on the first frequency domain signal to obtain a first signal to be sent and sends the first signal to be sent.

In a second aspect, an embodiment of the present invention provides a signal transmission apparatus, including:

a processing unit, configured to determine a first cyclic shift factor corresponding to the first user equipment;

the processing unit is further configured to perform cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, where the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain;

the processing unit is further configured to perform discrete fourier transform processing on the first cyclic shift time-domain signal to obtain a first frequency-domain signal;

the processing unit is further configured to perform frequency domain processing on the first frequency domain signal to obtain a first signal to be transmitted;

and the sending unit is used for sending the first signal to be sent.

In a third aspect, an embodiment of the present invention provides a first user equipment, including a processor and a transceiver,

the processor is configured to determine a first cyclic shift factor corresponding to the first user equipment;

the processor is further configured to perform cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, where the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain;

the processor is further configured to perform discrete fourier transform processing on the first cyclic shift time-domain signal to obtain a first frequency-domain signal;

the processor is further configured to perform frequency domain processing on the first frequency domain signal to obtain a first signal to be transmitted;

the transceiver is used for transmitting the first signal to be transmitted.

In the three aspects, after the first cyclic shift factor is determined, the first user equipment performs cyclic shift on the time domain signal according to the first cyclic shift factor, performs discrete fourier transform processing and frequency domain processing to obtain a first signal to be transmitted, and transmits the first signal to be transmitted, so that the purpose of randomizing inter-cell interference can be achieved through time domain cyclic shift.

With reference to the above three aspects, in a possible implementation manner, the first user equipment determines a first cyclic shift factor corresponding to the first user equipment according to a received first downlink signaling, where the first downlink signaling carries information of the first cyclic shift factor allocated to the first user equipment.

With reference to the above three aspects, in a possible implementation manner, the first user equipment calculates a first cyclic shift factor corresponding to the first user equipment according to a received first broadcast signaling, specifically, obtains a cell identifier of a cell to which the first user equipment belongs according to the first broadcast signaling, where the first broadcast signaling carries information of the cell to which the first user equipment belongs; and calculating according to the cell identifier to obtain a first cyclic shift factor corresponding to the first user equipment.

With reference to the above three aspects, in a possible implementation manner, the first reference sequence is a sequence that a first cyclic prefix is added before a sequence of a first reference signal, and a length of the first cyclic prefix is an integer greater than or equal to zero. And adding a cyclic prefix before the sequence of the reference signal so that the network equipment can eliminate the multipath interference of the reference signal to the uplink control information through proper processing.

With reference to the above three aspects, in a possible implementation manner, if the first user equipment is located in a first cell and the second user equipment is located in a second cell adjacent to the first cell, the first cyclic shift factor is different from a second cyclic shift factor corresponding to the second user equipment, and the first cyclic shift factor and the second cyclic shift factor are integers greater than or equal to zero. The adjacent cells adopt different cyclic shift factors, so that the purpose of randomizing the interference among the cells can be achieved.

With reference to the above three aspects, in a possible implementation manner, if the first user equipment and the second user equipment are located in the same cell, a multiplexing manner of the sequence of the first reference signal and the sequence of the second reference signal corresponding to the second user equipment is code division multiplexing.

With reference to the above three aspects, in a possible implementation manner, if the first user equipment and the second user equipment are located in the same cell, a multiplexing manner of the sequence of the first uplink control information and the sequence of the second uplink control information corresponding to the second user equipment is code division multiplexing or space division multiplexing.

In a fourth aspect, an embodiment of the present invention provides another signal transmission method, including:

the network equipment determines a first cyclic shift factor corresponding to the first user equipment;

the network device receives a first signal to be transmitted sent by the first user device, where the first signal to be transmitted is a signal obtained by the first user device performing discrete fourier transform and frequency domain processing on a first cyclic shift time domain signal in sequence, the first cyclic shift time domain signal is a signal obtained by the user device performing cyclic shift processing on the first time domain signal according to the first cyclic shift factor, and the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain.

In a fifth aspect, an embodiment of the present invention provides another signal transmission apparatus, including:

a processing unit, configured to determine a first cyclic shift factor corresponding to a first user equipment;

a receiving unit, configured to receive a first signal to be transmitted sent by the first user equipment, where the first signal to be transmitted is a signal obtained by the first user equipment performing discrete fourier transform and frequency domain processing on a first cyclic shift time-domain signal in sequence, the first cyclic shift time-domain signal is a signal obtained by the user equipment performing cyclic shift processing on the first time-domain signal according to the first cyclic shift factor, and the first time-domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain.

In a sixth aspect, an embodiment of the present invention provides a network device, including a processor and a transceiver,

the processor is configured to determine a first cyclic shift factor corresponding to a first user equipment;

the transceiver is configured to receive a first signal to be transmitted sent by the first user equipment, where the first signal to be transmitted is a signal obtained by the first user equipment performing discrete fourier transform and frequency domain processing on a first cyclic shift time domain signal in sequence, the first cyclic shift time domain signal is a signal obtained by the user equipment performing cyclic shift processing on the first time domain signal according to the first cyclic shift factor, and the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain.

In the fourth to sixth aspects, the network device determines the cyclic shift factor corresponding to the user equipment, and receives the signal to be transmitted sent by the user equipment, so that the network device processes the signal to be sent, and the purpose of randomizing inter-cell interference is achieved.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, after determining the first cyclic shift factor, the network device sends a first downlink notification signaling to the first user equipment, where the first downlink notification signaling carries information of the first cyclic shift factor allocated to the first user equipment, and the first downlink notification signaling is used by the first user equipment to determine the first cyclic shift factor.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, the network device sends a first broadcast signaling to the first user equipment, where the first broadcast signaling carries information of a cell to which the first user equipment belongs, and the first broadcast signaling is used for the first user equipment to obtain a cell identifier of the cell to which the first user equipment belongs, and obtain the first cyclic shift factor corresponding to the first user equipment according to the cell identifier.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, the first reference sequence is a sequence that a first cyclic prefix is added before a sequence of a first reference signal, and a length of the first cyclic prefix is an integer greater than or equal to zero. The cyclic prefix is added in front of the sequence of the reference signal, and the network equipment can eliminate the multipath interference of the reference signal to the uplink control information through proper processing.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, the network device determines a second cyclic shift factor corresponding to a second user equipment, where the second cyclic shift factor is different from the first cyclic shift factor, and a second cell to which the second user equipment belongs is adjacent to a first cell to which the first user equipment belongs; receiving a second signal to be sent by the second user equipment, where the second signal to be sent is obtained by the second user equipment performing discrete fourier transform and frequency domain processing on a second cyclic shift time domain signal in sequence, the second cyclic shift time domain signal is obtained by the user equipment performing cyclic shift processing on the second time domain signal according to the second cyclic shift factor, and the second time domain signal is obtained by multiplexing a second reference sequence and a second uplink control information sequence in a time domain.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, the network device determines the sequence of the first reference signal, and determines the sequence of a second reference signal corresponding to a second user equipment located in the same cell as the first user equipment, where a multiplexing manner of the sequence of the first reference signal and the sequence of the second reference signal is code division multiplexing. The network equipment allocates the sequences of the reference signals of different user equipments in the same cell to different cyclic shifted versions of the same root sequence.

With reference to the fourth aspect to the sixth aspect, in a possible implementation manner, a multiplexing manner of the sequence of the first uplink control information and the sequence of the second uplink control information corresponding to the second user equipment is code division multiplexing or space division multiplexing.

In a seventh aspect, the present application provides a computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the signal transmission method according to the first aspect.

In an eighth aspect, the present application provides a computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the signal transmission method according to the fourth aspect.

By implementing the embodiment of the invention, the purpose of randomizing the interference between the cells can be achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention;

fig. 2 is a schematic diagram of a basic principle of a short-time physical uplink control channel;

fig. 3 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

FIG. 4 is a diagram of the basic structure of a single symbol time domain signal;

FIG. 5 is a schematic diagram of the structure of four circularly shifted time-domain signals;

FIG. 6a is a schematic diagram of continuous subcarrier mapping;

FIG. 6b is a schematic diagram of equally spaced subcarrier mapping;

fig. 7 is a schematic structural diagram of a time domain signal of two symbols according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a signal transmission device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another signal transmission apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first user equipment according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

The embodiment of the present invention may be applied to a wireless communication system, where the wireless communication system generally includes Base Stations (BS), a coverage area of a Base Station includes at least one cell, and the Base Station may provide communication services to a plurality of user equipments in the cell, as shown in the application scenario diagram shown in fig. 1, the coverage area of the Base Station includes three cells, and provides communication services to the user equipment 1 in the cell 1 and the user equipment 2 in the cell 2. It should be noted that the number of cells, the form of base stations, the number of user equipments, and the form of user equipments shown in fig. 1 are used for example and do not limit the embodiments of the present invention. The base station may be connected to core network equipment, not shown in fig. 1. The base station includes a Baseband Unit (BBU) and a Remote Radio Unit (RRU). BBU and RRU can be placed in different places, for example: RRU is remote and is placed in an open area with high telephone traffic, and BBU is placed in a central machine room. The BBU and the RRU can also be placed in the same machine room. The BBU and RRU can also be different components under one chassis.

It should be noted that, the wireless communication system according to the embodiment of the present invention includes, but is not limited to: narrowband Band-Internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data rates for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (Code Division Multiple Access, CDMA2000), Time Division-synchronous Code Division Multiple Access (TD-SCDMA), Long Term Evolution (Long Term Evolution, LTE), NR, and future Mobile communication systems.

In an embodiment of the present invention, the base station is a device deployed in a radio access network to provide a wireless communication function for a user equipment. The base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, Transmission Reception Points (TRPs), and the like. In systems using different radio access technologies, names of devices having a base station function may be different, for example, in an LTE system, the device is called an evolved Node B (eNB or eNodeB), and in a third Generation (3rd Generation, 3G) system, the device is called a Node B (NB). For convenience of description, in all embodiments of the present invention, the above-mentioned apparatus for providing a wireless communication function for a user equipment is collectively referred to as a network device.

User Equipment (UE) involved in embodiments of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. The user equipment may also be referred to as a Mobile Station (MS), a Terminal (Terminal), and may further include a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a Machine Type Communication (MTC) Terminal, and the like. For convenience of description, in all embodiments of the present invention, the above-mentioned devices are collectively referred to as user equipment.

A design scheme of a short-time PUCCH is proposed in a 3GPP conference, which is designed based on a DFT-s-OFDM waveform, and as shown in a basic principle schematic diagram of the short-time PUCCH in fig. 2, a time domain Signal is first obtained by multiplexing UCI and an uplink Reference Signal (RS) in a time domain, then the time domain Signal is transformed into a frequency domain through DFT to obtain a frequency domain Signal, then the frequency domain Signal is sequentially subjected to conventional operations in the frequency domain, such as subcarrier mapping, Inverse Fast Fourier Transform (IFFT), Cyclic Prefix (CP) addition, and the like, and finally the generated Signal is transmitted through a radio frequency module. Some of which are not shown in fig. 2, which are frequency domain normal operations. According to the flow shown in fig. 2, the finally generated waveform has the characteristic of low PAPR and can flexibly configure the load.

However, the design scheme directly performs time division multiplexing on the UCI and the uplink RS, and there is inter-cell interference.

In view of this, embodiments of the present invention provide a signal transmission method and apparatus, which improve a time domain signal in a basic principle schematic diagram shown in fig. 2, and can meet a design criterion of a short-time PUCCH, so as to achieve the purpose of randomizing inter-cell interference. Correspondingly, the embodiment of the invention also provides a signal transmission method and a device thereof, wherein the network equipment receives the signal to be transmitted sent from the user equipment and processes the signal to be transmitted to obtain a reference signal sequence and a sequence of uplink control information.

The following describes a signal transmission method provided by an embodiment of the present invention in detail.

Referring to fig. 3, fig. 3 is a schematic flowchart of a signal transmission method according to an embodiment of the present invention, the schematic flowchart is introduced from the perspective of a network device interacting with a first user equipment, and the method includes, but is not limited to, the following steps:

step S101: the network equipment determines a first cyclic shift factor corresponding to the first user equipment;

the first user equipment is any user equipment within the coverage range of the network equipment.

In a possible implementation manner, the network device may determine the first cyclic shift factor corresponding to the first user equipment according to a certain rule, and a specific rule is not limited in the embodiment of the present invention. For example, the network device may determine the first cyclic shift factor according to a table look-up rule, first, the network device determines a cell identifier of a cell to which the first user equipment belongs, searches for the cyclic shift factor corresponding to the cell identifier in a preset comparison table according to the cell identifier, and determines the cyclic shift factor as the first cyclic shift factor, where the preset comparison table includes the cyclic shift factor corresponding to each cell identifier in at least one cell identifier. For another example, the network device allocates the first cyclic shift factor to the first user equipment according to a random allocation rule.

In a possible implementation manner, the network device may first determine a cell identifier of a cell to which the first user equipment belongs, and calculate a first cyclic shift factor corresponding to the first user equipment according to the cell identifier, where a specific calculation formula or a calculation method is not limited in this embodiment of the present invention.

In the foregoing two possible implementation manners, the method for determining, by the network device, the cell identifier of the cell to which the first user equipment belongs is not limited in the embodiment of the present invention. The Cell identity may be a Physical Cell Identity (PCI).

Optionally, the network device may determine the first cyclic shift factor corresponding to the first user equipment when the first user equipment initiates random access.

For a second UE located in the same cell as the first UE, the network device may allocate, to the second UE, a second cyclic shift factor that is the same as or different from the first cyclic shift factor, that is, the cyclic shift factors of UEs in the same cell may be the same or different. For example, the network device may allocate a cyclic shift factor of 1 for UE 1 in cell 1 and may allocate a cyclic shift factor of 1 or a cyclic shift factor of 2 for UE2 in cell 1.

For a second UE in a second cell adjacent to the first cell to which the first UE belongs, the network device may allocate, to the second UE, a second cyclic shift factor different from the first cyclic shift factor, that is, allocate, to a UE in an adjacent cell, a different cyclic shift factor. For example, the network device allocates cyclic shift factor 1 for UE 1 in cell 1 and cyclic shift factor 2 for UE2 in cell 2, where cyclic shift factor 1 is different from cyclic shift factor 2.

For a second user equipment in a second cell not adjacent to the first cell to which the first user equipment belongs, the network equipment may allocate, to the second user equipment, a second cyclic shift factor that is the same as or different from the first cyclic shift factor.

The network device may allocate a cyclic shift factor to a user equipment within a coverage area of the network device, where the cyclic shift factor is an integer greater than or equal to zero, and the first cyclic shift factor and the second cyclic shift factor are both integers greater than or equal to zero. If the cyclic shift factor is equal to zero, it may indicate that no cyclic shift may be performed.

The network device may notify the first user equipment through downlink notification signaling after determining the first cyclic shift factor.

Specifically, the network device sends a first downlink notification signaling to the first user equipment, where the first downlink notification signaling carries information of the first cyclic shift factor, that is, the network device notifies the user equipment of the information of the cyclic shift factor through the downlink notification signaling. The information of the first cyclic shift factor may be a specific value of the first cyclic shift factor, a number or an identifier of the first cyclic shift factor (one number or identifier corresponds to a specific value of one cyclic shift factor), or other information indirectly indicating a specific value of the first cyclic shift factor.

The first downlink notification signaling carries information of the first cyclic shift factor, and is used to notify the first user equipment to perform cyclic shift on a first time domain signal according to the first cyclic shift factor, where the first downlink notification signaling may be a message 2 or a message 4 in a random Access process, may also be a Media Access Control (MAC) layer signaling, and may also be a Radio Resource Control (RRC) signaling or other higher layer signaling, and specifically, which is not limited in the embodiment of the present invention.

Optionally, the network device sends a second downlink notification signaling to a second user equipment, where the second downlink notification signaling carries information of the second cyclic shift factor. The second user equipment may be located in the same cell as the first user equipment, may be located in a second cell adjacent to the first cell to which the first user equipment belongs, and may be located in a second cell that is not adjacent to the first cell to which the first user equipment belongs. And if the second user equipment is located in a second cell adjacent to the first cell to which the first user equipment belongs, the second cyclic shift factor is different from the first cyclic shift factor.

The network device may notify the first user equipment through broadcast signaling after determining the cell identity of the cell to which the first user equipment belongs.

Specifically, the network device sends a first broadcast signaling to the first user equipment, where the first broadcast signaling carries information of a cell to which the first user equipment belongs, that is, the network device notifies information of the cell to which all user equipments in the cell to which the first user equipment belongs through the first broadcast notification signaling. The information of the belonging cell may include a cell identity, information indirectly indicating a cell identity, etc. The first broadcast signaling may be a broadcast message including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or may be another broadcast message that may indicate information of a cell to which the first broadcast signaling belongs. PSS and SSS are used in combination to indicate physical cell identity.

Optionally, if the second user equipment is located in a different cell from the first user equipment, the network equipment may send a second broadcast signaling to the second user equipment, that is, the network equipment notifies information of a cell to which the second user equipment belongs to all user equipments in the cell to which the second user equipment belongs through the second broadcast signaling. And if the second user equipment and the first user equipment are located in the same cell, the second user equipment can acquire the information of the cell through the first broadcast signaling.

Step S102: the first user equipment determines a first cyclic shift factor corresponding to the first user equipment;

in a possible implementation manner, the first user equipment receives the first downlink signaling sent by the network equipment, and determines the first cyclic shift factor corresponding to the first user equipment according to the received first downlink signaling, where the first downlink signaling carries information of the first cyclic shift factor allocated to the first user equipment. The first ue may obtain a specific value of the first cyclic shift factor according to the information of the first cyclic shift factor. If the information of the first cyclic shift factor is a specific numerical value, the first user equipment can directly obtain the information and perform cyclic shift by using the numerical value. If the information of the first cyclic shift factor is a serial number or an identification of the cyclic shift factor, the first user equipment obtains a specific numerical value of the first cyclic shift factor according to a preset corresponding relationship, the preset corresponding relationship comprises a corresponding relationship between the serial number or the identification of the cyclic shift factor and the specific numerical value of the cyclic shift factor, and the preset corresponding relationship is stored in the network equipment and the first user equipment.

In a possible implementation manner, the first user equipment receives the first broadcast signaling sent by the network equipment, and obtains a cell identifier of a cell to which the first user equipment belongs according to the received first broadcast signaling, for example, the first broadcast signaling is a broadcast message including a PSS and an SSS, and the first user equipment determines a PCI of the cell to which the first user equipment belongs according to the PSS and the SSS. And the first user equipment calculates according to the cell identifier to obtain the first cyclic shift factor corresponding to the first user equipment. The formula or method for calculating the cyclic shift factor by the first user equipment is the same as the formula or method for calculating the cyclic shift factor by the network equipment, so that the calculation results of the two ends are the same.

Step S103: the first user equipment performs cyclic shift processing on the first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal;

the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain, and the first reference sequence is a sequence in which a first CP is added before the sequence of the first reference signal. It should be noted that the first uplink control information may be a sequence, or may be a plurality of modulation symbols, and each of the modulation symbols corresponds to a different load requirement. If the first uplink control information is a sequence, the sequence of the first uplink control information is itself. And if the first uplink control information is a plurality of modulation symbols, the first user equipment processes the first uplink control information to obtain a sequence of the first uplink control information.

Fig. 4 is a schematic diagram of a basic structure of a single symbol time domain Signal, a CP is added before an RS, and the RS in fig. 4 may represent an uplink Reference Signal, for example, the uplink Reference Signal may be a Sounding Reference Signal (SRS) used for uplink channel quality measurement, and a Demodulation Reference Signal (DRS) used for uplink channel estimation, coherent detection and Demodulation at a base station side; UCI in fig. 4 represents uplink control information. It should be noted that adding CP before RS is performed before DFT, and different from the cyclic prefix adding process in fig. 2, the length of adding CP twice may be different. In fig. 4, RS and UCI represent one symbol, i.e., a single symbol.

The sequence of the first reference signal is a sequence of an uplink reference signal, and may be a ZC sequence, a Gold sequence, or the like. Assuming that the length of the sequence of the first reference signal is L, it can be expressed as z ═ z₀,...,z_L-1](ii) a The length of the first CP is L₁(ii) a The length of the first reference sequence is L + L₁Can be represented as

The sequence of the first uplink control information has a length M and may be expressed as d ═ d₀,...,d_M-1]. The length of the first time domain signal obtained by multiplexing the first reference sequence and the sequence of the first uplink control information in the time domain is N-M + L₁Can be expressed as x ═ z, d]。

Assuming that the first cyclic factor is N_cThe first user equipment performs cyclic shift processing on the first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, where the length of the first cyclic shift time domain signal is N ═ M + L₁Can be represented as x_c＝circshift(x,N_c) Wherein circshift indicates N for x_cCyclic shift of (2).

N_cThe obtained first cyclic shift time domain signals have different structures, which can be seen in fig. 5, which is a schematic structural diagram of four cyclic shift time domain signals. If N is present_cIs zeroI.e. without cyclic shifting, the structure of the first cyclic shifted time domain signal may be as shown in the first row of fig. 5, which is the same as the structure shown in fig. 4. If N is present_cM/2, the structure of the first cyclic shifted time domain signal can be as shown in the second row of fig. 5. If N is present_cAnd is M, the structure of the first cyclic shifted time domain signal can be shown in the third row of fig. 5. If N is present_cM + L, the structure of the first cyclic shifted time domain signal can be as shown in the fourth row of fig. 5. It should be noted that the four structures shown in fig. 5 are only for example and do not limit the embodiments of the present invention, and the practical application includes, but is not limited to, these four structures.

Different user equipment can carry out cyclic shift processing on the time domain signals corresponding to the user equipment according to the cyclic shift factors corresponding to the user equipment to obtain the cyclic shift time domain signals corresponding to the user equipment. Due to N_cThe values of (2) are different, the structure of the cyclic shift time domain signal is different, and the cyclic shift time domain signal can be used as interference randomization between cells. Network equipment allocates different N for user equipment in adjacent cells_cThe RS of the adjacent cells can be prevented from colliding in the time domain, so that the purpose of randomizing interference can be achieved.

It should be noted that the length of the first cyclic prefix is an integer greater than or equal to zero, and specific values are not limited in the embodiment of the present invention. When the length of the first cyclic prefix is zero, different cyclic shift factors can still be adopted among cells to randomize interference.

Step S104: the first user equipment performs discrete Fourier transform processing on the first cyclic shift time domain signal to obtain a first frequency domain signal;

the first user equipment pair x_cPerforming an N-point DFT process to obtain a first frequency domain signal, which can be represented as X_c＝dft(x_c)。

Step S105: the first user equipment performs frequency domain processing on the first frequency domain signal to obtain a first signal to be sent;

the frequency domain processing includes conventional processing procedures such as subcarrier mapping, IFFT, CP addition, and the like. The first user deviceX can be sent according to the scheduling information sent by the network equipment_cIs mapped onto several subcarriers of the frequency domain.

The first user equipment may exchange X_cMapping to consecutive sub-carriers, see for example fig. 6a, which is a schematic diagram of mapping of consecutive sub-carriers, X_cMapping to N-1 continuous sub-carriers, wherein the N-1 continuous sub-carriers are from a sub-carrier k to a sub-carrier k + N-1.

The first user equipment may exchange X_cMapping to equally spaced (comb) subcarriers, see for example fig. 6b, which is a schematic diagram of equally spaced subcarrier mapping, X_cThe subcarriers are mapped to N-1 subcarriers distributed at equal intervals, the interval is D, D is an integer greater than 1, and the specific value is not limited in the embodiment of the present invention. Mixing X_cMapping to the subcarriers with equal interval distribution (comb-shaped), the frequency domain diversity can be improved, and the low PAPR is ensured.

It can be understood that the frequency domain signal corresponding to the UE 1 and the frequency domain signal corresponding to the UE2 may be comb-shaped frequency division multiplexed, and the structure of the cyclic shift time domain signal corresponding to the UE2 may be the same as or different from the structure of the cyclic shift time domain signal corresponding to the UE 1. In other words, the frequency domain signals corresponding to the cyclic shifted time domain signals with different structures can be comb-shaped frequency division multiplexed.

Step S106: the first user equipment sends the first signal to be sent; optionally, the first user equipment sends the first signal to be sent to the network equipment;

it can be understood that the first signal to be transmitted carries the sequence of the first reference signal and the sequence of the first uplink control information. The first user equipment can send the first signal to be sent to the network equipment through a radio frequency module.

Step S107: the network equipment receives the first signal to be sent; optionally, the network device receives the first signal to be transmitted sent by the first user equipment;

based on the time domain signal basic structure shown in fig. 4, due to the existence of the CP, the RS does not suffer from the multi-path interference of the UCI, and meanwhile, the convolution of the RS and the channel is converted into a cyclic convolution, so that the network device can obtain the frequency domain channel response of the channel by using various channel estimation algorithms. After obtaining the frequency domain channel response, the network device can compensate the fading channel of the RS and UCI combined signal by using an equalization algorithm, eliminate the multipath effect, and simultaneously eliminate the multipath interference of the RS to the UCI. Thus, even if UCI does not add an additional CP before DFT, the network device can be protected from RS interference by appropriate signal processing steps. Compared with the scheme of adding the CP before the DFT and before the RS and the UCI, the method can save additional overhead.

Optionally, the network device may perform signal processing on the first signal to be transmitted according to the first cyclic shift factor to obtain the sequence of the first reference signal and the sequence of the first uplink control information, so as to obtain the first reference signal and the first uplink control information. The network device may sequentially perform cyclic prefix removal, fast fourier transform, sub-carrier mapping removal, inverse discrete fourier transform, and cyclic shift removal processing according to the first cyclic shift factor on the first signal to be transmitted based on the inverse processing process shown in fig. 2 to obtain the first time domain signal, so as to obtain the first reference signal sequence and the first uplink control information sequence.

Optionally, the network device may receive a second signal to be transmitted sent by a second user equipment. And a second cell to which the second user equipment belongs is adjacent to the first cell to which the first user equipment belongs, and a second cyclic shift factor corresponding to the second user equipment is different from the first cyclic shift factor. The second signal to be transmitted is a signal obtained by the second user equipment performing discrete fourier transform and frequency domain processing on a second cyclic shift time domain signal in sequence, the second cyclic shift time domain signal is a signal obtained by the user equipment performing cyclic shift processing on the second time domain signal according to the second cyclic shift factor, and the second time domain signal is a signal obtained by multiplexing a second reference sequence and a second uplink control information sequence in a time domain. The network device may process the second signal to be transmitted according to the second cyclic shift factor to obtain the second reference signal sequence and the second uplink control information sequence, and further obtain the second reference signal and the second uplink control information. Similarly, the network device may obtain the second reference signal sequence and the second uplink control information sequence based on the inverse processing procedure of fig. 2.

In the method described in fig. 3, after determining the cyclic shift factor, the user equipment performs cyclic shift on the time domain signal according to the cyclic shift factor, performs DFT processing and frequency domain processing to obtain a signal to be transmitted, transmits the signal to be transmitted, and achieves the purpose of randomizing inter-cell interference through time domain cyclic shift. Since the cyclic prefix is added in front of the sequence of the reference signal of the time domain signal, the multipath interference between the uplink control information and the reference signal can be avoided.

The method described in fig. 3 takes one ue as an example, and based on the method described in fig. 3, the embodiment of the present invention may also implement multiplexing of multiple ues in the same cell. In the following, two user equipments of the same cell are taken as an example, and the two user equipments may be UE 1 and UE 2.

Before UE 1 and UE2 carry out cyclic shift, the network equipment determines that the RS sequence corresponding to UE 1 is z₁And determining that the RS sequence corresponding to the UE2 is z₂，z₁And z₂For orthogonal sequences, the most typical orthogonal method for two sequences to combat multipath effects is time-domain cyclic shift, i.e., z₁And z₂Different cyclically shifted versions of the same root sequence. In other words, z₁And z₂The multiplexing mode of (2) is code division multiplexing, and besides the code division multiplexing is realized by time domain cyclic shift, the code division multiplexing can also be realized by other modes. Network device in determining z₁And z₂Then, UE 1, z may be notified via downlink signaling, respectively₁Serial number or other information of (a); informing UE2, z₂So that UE 1, UE2 respectively adopt z₁、z₂And performing time division multiplexing with the sequence of the UCI 1 and the sequence of the UCI 2 to obtain a time domain signal 1 and a time domain signal 2. The downlink signaling may be the downlink notification signaling in the method described in fig. 3, or may be other signaling for notifying the UE to adoptWhich reference signal is used for downlink signaling.

Aiming at a small load scene of uplink control information load 1-2 bits, before UE 1 and UE2 carry out cyclic shift, network equipment can inform UE 1 of the sequence number or other information of UCI 1 through downlink signaling; and informing the UE2 of the sequence numbers or other information of the UCI 2 so that the UE 1 and the UE2 respectively carry out time division multiplexing on the sequence of the UCI 1 and the sequence of the UCI 2 to obtain a time domain signal 1 and a time domain signal 2. In other words, the multiplexing method of UCI 1 and UCI 2 is code division multiplexing. In this case, the implementation manner of code division multiplexing may be time domain cyclic shift, or may also be orthogonal mask, or other manners.

For a high-load scene with a large number of uplink control information load bits, the UCI 1 and the UCI 2 may be distinguished in a space division multiplexing manner, that is, the UE 1 sends a first signal to be sent carrying the UCI 1, and the UE2 sends a second signal to be sent carrying the UCI 2. The network device may distinguish respective UCIs of the two UEs through a signal processing method.

The signal transmission method provided by the embodiment of the invention is suitable for the scene of the single-symbol short-time PUCCH, the short-time PUCCH scene of two symbols can be expanded based on the embodiment of the invention, and the schematic structural diagram of the time domain signals of the two symbols can be seen in FIG. 7.

In a possible implementation, which can be seen in the first row of fig. 7, the structure of the time domain signals of the two symbols is the same, which is a replica of the structure shown in fig. 4. Optionally, the cyclic shift factor corresponding to the first symbol may be different from the cyclic shift factor corresponding to the second symbol, and after determining the cyclic shift factor corresponding to the first symbol, the UE may calculate the cyclic shift factor corresponding to the second symbol according to the cyclic shift factor corresponding to the first symbol and a preset calculation formula. Optionally, the first symbol has a different frequency domain location, i.e. frequency hopping, than the second symbol.

In a possible implementation, see the second row of fig. 7, the structure of the time domain signal of the first symbol is the same as that shown in fig. 4, and the second symbol includes only UCI and no RS, which can save overhead. The UE may still cyclically shift the time domain signals of the two symbols according to the cyclic shift factor.

The two-symbol short-time PUCCH scenario may be processed identically except that the time domain signal is different from the single-symbol short-time PUCCH scenario.

The method of embodiments of the present invention is set forth above in detail and the apparatus of embodiments of the present invention is provided below.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a signal transmission apparatus according to an embodiment of the present invention, where the signal transmission apparatus 301 may include a processing unit 3011 and a sending unit 3012.

A processing unit 3011, configured to determine a first cyclic shift factor corresponding to the first user equipment;

the processing unit 3011 is further configured to perform cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, where the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain;

the processing unit 3011 is further configured to perform discrete fourier transform processing on the first cyclic shift time-domain signal to obtain a first frequency-domain signal;

the processing unit 3011 is further configured to perform frequency domain processing on the first frequency domain signal to obtain a first signal to be sent;

a sending unit 3012, configured to send the first signal to be sent.

It should be noted that the signal transmission apparatus 301 shown in fig. 8 can implement the operation flow on the user equipment side of the embodiment shown in fig. 3, wherein the processing unit 3011 is configured to execute step S102, step S103, step S104, and step S105; the transmission unit 3013 is configured to execute step S106. The Signal transmission device 301 may be, for example, any UE in a coverage area of a base station, and the Signal transmission device 301 may also be an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), or a chip that implements related functions. If the signal transmission device 301 is a chip, the sending unit 3012 may be an output interface of the chip.

Referring to fig. 9, fig. 9 is a schematic structural diagram of another signal transmission apparatus according to an embodiment of the present invention, where the signal transmission apparatus 402 may include a processing unit 4011 and a receiving unit 4012.

The processing unit 4011 is configured to determine a first cyclic shift factor corresponding to the first user equipment;

a receiving unit 4012, configured to receive a first signal to be sent by the first user equipment, where the first signal to be sent is a signal obtained by the first user equipment performing discrete fourier transform and frequency domain processing on a first cyclic shift time-domain signal in sequence, the first cyclic shift time-domain signal is a signal obtained by the user equipment performing cyclic shift processing on the first time-domain signal according to the first cyclic shift factor, and the first time-domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain.

It should be noted that the signal transmission apparatus 401 shown in fig. 9 can implement the operation flow on the network device side in the embodiment shown in fig. 3, where the processing unit 4011 is configured to execute step S101; the transmission unit 4012 is configured to execute step S107. The signal transmission device 401 is, for example, a base station, and the signal transmission device 401 may also be an ASIC, a DSP, or a chip that implements related functions. If the signal transmission device 401 is a chip, the receiving unit may be an output interface of the chip.

As shown in fig. 10, an embodiment of the present invention further provides a first user equipment 302. The first UE may be any UE in the coverage area of the base station, or a DSP or ASIC or chip implementing the relevant resource mapping function. The first user equipment 302 comprises:

a memory 3021 for storing programs; the Memory may be a Random Access Memory (RAM), a Read Only Memory (ROM), or a flash Memory, where the Memory may be located in the communication device alone or in the processor 3023.

The transceiver 3022 may be implemented as a separate chip, or may be implemented as a transceiver circuit within the processor 3023 or as an input/output interface. A transceiver 3022 for transmitting a first signal to be transmitted; the transceiver 3022 is further configured to receive a first downlink signaling or a first broadcast signaling sent by the network device.

A processor 3023 for executing the program stored in the memory, and when the program is executed, the processor 3023 for determining a first cyclic shift factor corresponding to the first user equipment; the processor 3023 is further configured to perform cyclic shift processing on a first time domain signal according to the first cyclic shift factor to obtain a first cyclic shift time domain signal, where the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain; the processor 3023 is further configured to perform discrete fourier transform processing on the first cyclic shift time-domain signal to obtain a first frequency-domain signal; the processor 3023 is further configured to perform frequency domain processing on the first frequency domain signal to obtain a first signal to be transmitted.

The transceiver 3021, the memory 3022, and the processor 3023 are optionally connected via a bus 3024.

As shown in fig. 11, an embodiment of the present invention further provides a network device 402. The network device may be a base station, or a DSP or ASIC or chip implementing the relevant resource mapping function. The network device 402 includes:

a memory 4021 for storing a program; the memory may be RAM or ROM or flash memory, which may be located in the communication device alone or in the processor 4042.

The transceiver 4022 may be a separate chip, or may be a transceiver circuit in the processor 4023 or may be an input/output interface. The transceiver 4022 is configured to receive a first signal to be transmitted, which is sent by a first user equipment, where the first signal to be transmitted is a signal obtained by the first user equipment performing discrete fourier transform and frequency domain processing on a first cyclic shift time domain signal in sequence, the first cyclic shift time domain signal is a signal obtained by the user equipment performing cyclic shift processing on the first time domain signal according to the first cyclic shift factor, and the first time domain signal is a signal obtained by multiplexing a first reference sequence and a sequence of first uplink control information in a time domain. The transceiver 4022 is further configured to send a first downlink notification signaling or a first broadcast signaling to the first user equipment.

A processor 4023 is configured to execute the program stored in the memory, and when the program is executed, the processor 4023 is configured to determine a first cyclic shift factor corresponding to the first user equipment.

The transceiver 4021, the memory 4022, and the processor 4023 are optionally connected by a bus 4024.

An embodiment of the present invention further provides a communication system, including the network device and the first user equipment in the foregoing embodiment.

The Device according to the embodiment of the present Application may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system Chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal processing Circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD) or other Integrated chips.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. For convenience and brevity, the method embodiments may also be referred to by each other, and are not described in detail.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A signal transmission method, comprising:

2. The method of claim 1, wherein the first user equipment determining a first cyclic shift factor corresponding to the first user equipment comprises:

the first user equipment determines a first cyclic shift factor corresponding to the first user equipment according to a received first downlink notification signaling, wherein the first downlink notification signaling carries information of the first cyclic shift factor allocated to the first user equipment.

3. The method of claim 1, wherein the first user equipment determining a first cyclic shift factor corresponding to the first user equipment comprises:

the first user equipment acquires a cell identifier of a cell to which the first user equipment belongs according to a received first broadcast signaling, wherein the first broadcast signaling carries information of the cell to which the first user equipment belongs;

and the first user equipment calculates according to the cell identifier to obtain a first cyclic shift factor corresponding to the first user equipment.

4. The method of any one of claims 1-3, wherein the first reference sequence is a sequence that is preceded by a first cyclic prefix, the first cyclic prefix having a length that is an integer greater than or equal to zero.

5. The method of claim 1, wherein if the first ue is located in a first cell and a second ue is located in a second cell adjacent to the first cell, the first cyclic shift factor is different from a second cyclic shift factor corresponding to the second ue, and the first cyclic shift factor and the second cyclic shift factor are integers greater than or equal to zero.

6. The method of claim 4, wherein if the first user equipment and the second user equipment are located in the same cell, the multiplexing mode of the sequence of the first reference signal and the sequence of the second reference signal corresponding to the second user equipment is code division multiplexing.

7. The method of claim 6, wherein the sequence of the first uplink control information is multiplexed with the sequence of the second uplink control information corresponding to the second user equipment in a code division multiplexing or space division multiplexing manner.

8. A signal transmission method, comprising:

9. The method of claim 8, wherein before the network device receives the first signal to be transmitted sent by the first user device, further comprising:

the network device sends a first downlink notification signaling to the first user equipment, where the first downlink notification signaling carries information of the first cyclic shift factor allocated to the first user equipment, and the first downlink notification signaling is used for the first user equipment to determine the first cyclic shift factor.

10. The method of claim 8, wherein before the network device receives the first signal to be transmitted sent by the first user device, further comprising:

the network device sends a first broadcast signaling to the first user device, the first broadcast signaling carries information of a cell to which the first user device belongs, the first broadcast signaling is used for the first user device to obtain a cell identifier of the cell to which the first user device belongs, and the first cyclic shift factor corresponding to the first user device is obtained through calculation according to the cell identifier.

11. The method of any one of claims 8-10, wherein the first reference sequence is a sequence that is preceded by a first cyclic prefix, the first cyclic prefix having a length that is an integer greater than or equal to zero.

12. The method of claim 8, further comprising:

the network device determines a second cyclic shift factor corresponding to a second user device, wherein the second cyclic shift factor is different from the first cyclic shift factor, and a second cell to which the second user device belongs is adjacent to a first cell to which the first user device belongs;

the network device receives a second signal to be transmitted sent by the second user device, where the second signal to be transmitted is a signal obtained by the second user device performing discrete fourier transform and frequency domain processing on a second cyclic shift time domain signal in sequence, the second cyclic shift time domain signal is a signal obtained by the user device performing cyclic shift processing on the second time domain signal according to the second cyclic shift factor, and the second time domain signal is a signal obtained by multiplexing a second reference sequence and a second uplink control information sequence in a time domain.

13. The method of claim 11, further comprising:

and the network equipment determines the sequence of the first reference signal and determines the sequence of a second reference signal corresponding to a second user equipment which is located in the same cell with the first user equipment, wherein the multiplexing mode of the sequence of the first reference signal and the sequence of the second reference signal is code division multiplexing.

14. The method of claim 13, wherein the sequence of the first uplink control information is multiplexed with the sequence of the second uplink control information corresponding to the second user equipment in a code division multiplexing or space division multiplexing manner.

15. A first user device comprising a processor and a transceiver;

the transceiver is used for transmitting the first signal to be transmitted.

16. The first user equipment according to claim 15, wherein the processor is configured to, when determining the first cyclic shift factor corresponding to the first user equipment, specifically, determine the first cyclic shift factor corresponding to the first user equipment according to a received first downlink signaling, where the first downlink signaling carries information of the first cyclic shift factor allocated to the first user equipment.

17. The first ue of claim 15, wherein the processor is configured to, when determining the first cyclic shift factor corresponding to the first ue, specifically, obtain a cell identifier of a cell to which the first ue belongs according to a received first broadcast signaling, where the first broadcast signaling carries information of the cell to which the first ue belongs; and calculating according to the cell identifier to obtain a first cyclic shift factor corresponding to the first user equipment.

18. The first user equipment of any of claims 15-17, wherein the first reference sequence is a sequence that is preceded by a first cyclic prefix, the length of the first cyclic prefix being an integer greater than or equal to zero.

19. The first ue of claim 15, wherein if the first ue is located in a first cell and a second ue is located in a second cell adjacent to the first cell, the first cyclic shift factor is different from a second cyclic shift factor corresponding to the second ue, and the first cyclic shift factor and the second cyclic shift factor are integers greater than or equal to zero.

20. The first ue of claim 18, wherein if the first ue and the second ue are in the same cell, the sequence of the first reference signal and the sequence of the second reference signal corresponding to the second ue are multiplexed by code division multiplexing.

21. The first ue of claim 20, wherein the sequence of the first uplink control information is multiplexed with the sequence of the second uplink control information corresponding to the second ue in a code division multiplexing or space division multiplexing manner.

22. A network device comprising a processor and a transceiver,

23. The network device of claim 22,

the transceiver is further configured to send a first downlink notification signaling to the first user equipment, where the first downlink notification signaling carries information of the first cyclic shift factor allocated to the first user equipment, and the first downlink notification signaling is used for the first user equipment to determine the first cyclic shift factor.

24. The network device of claim 22,

the transceiver is further configured to send a first broadcast signaling to the first user equipment, where the first broadcast signaling carries information of a cell to which the first user equipment belongs, and the first broadcast signaling is used for the first user equipment to obtain a cell identifier of the cell to which the first user equipment belongs, and obtain the first cyclic shift factor corresponding to the first user equipment according to the cell identifier.

25. The network device of any one of claims 22-24, wherein the first reference sequence is a sequence that is preceded by a sequence of first reference signals with a first cyclic prefix having a length that is an integer greater than or equal to zero.

26. The network device of claim 22,

the processor is further configured to determine a second cyclic shift factor corresponding to a second user equipment, where the second cyclic shift factor is different from the first cyclic shift factor, and a second cell to which the second user equipment belongs is adjacent to a first cell to which the first user equipment belongs;

the transceiver is further configured to receive a second signal to be transmitted sent by the second user equipment, where the second signal to be transmitted is a signal obtained by the second user equipment performing discrete fourier transform and frequency domain processing on a second cyclic shift time-domain signal in sequence, the second cyclic shift time-domain signal is a signal obtained by the user equipment performing cyclic shift processing on the second time-domain signal according to the second cyclic shift factor, and the second time-domain signal is a signal obtained by multiplexing a second reference sequence and a sequence of second uplink control information in a time domain.

27. The network device of claim 25,

the processor is further configured to determine a sequence of the first reference signal, and determine a sequence of a second reference signal corresponding to a second user equipment located in the same cell as the first user equipment, where a multiplexing manner of the sequence of the first reference signal and the sequence of the second reference signal is code division multiplexing.

28. The network device of claim 27, wherein the sequence of the first uplink control information is multiplexed with the sequence of the second uplink control information corresponding to the second user equipment in a code division multiplexing or space division multiplexing manner.

29. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-7.

30. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 8-14.